User's Manual

SPEEDLAN 9000 Series Installation and Operation User Guide Version 3.03
Glossary-9
Host
This term is interchangeable with the definition “node,” which means this is a point on the network. The host
is also any device on the network that has two-way communication to any point on the network, as well as the
Internet.
Hot-standby
A condition whereby when the primary method of communication goes down, the secondary method instantly
takes over.
Hub
This device on a network collects, receives, and repeats data to its forwarded destination on the network. A
hub is also known as a switch.
HyperTerminal
This provides you details of the internal configuration of the ODU. In the HyperTerminal, you can also change
the port settings for the modem connection and adjust the settings to make a call.
IDU
Indoor Unit (i.e., Modem Unit).
IF Cable
In an SPEEDCOM system, this is the coaxial cables that connects the modem unit to the RF unit. These cables
are terminated with male TNC-type connectors at both ends.
Interface
The standard signal for connecting a microwave system to the connecting equipment.
Interference
Unwanted signals that cause performance degradation or loss of information.
Intermediate Frequency (IF)
The frequency to which a microwave signal is converted to permit signal processing. This range is typically
around 70 to 200 MHz.